The difference and development prospect forecast of analog interphone, digital interphone and public network interphone

The difference and development prospect forecast of analog interphone, digital interphone and public network interphone

When the walkie talkie was just facing the market, it was an analog walkie talkie. With the development of science and technology, the digital walkie talkie was launched in the past few years, and the public network walkie talkie has been launched in recent years. What is the difference between them.

Nowadays, as more and more walkie talkies enter the market, many users will ask, what is digital walkie talkie? What is a traditional walkie talkie? What is the difference between the two? What kind of communication mode is mobile phone intercom on the market? Why digital walkie talkie is relatively expensive? What's good about digital walkie talkie? In order to answer the above questions, we should make clear the difference and application of the three.

In terms of design technology, radio walkie talkie can be divided into analog communication technology (that is, our common traditional walkie talkie) and digital walkie talkie designed with digital technology. The analog walkie talkie modulates the stored signal to the transmission frequency of the walkie talkie, while the digital walkie talkie digitizes the voice information and transmits it in the form of digital coding, that is, all the modulation on the transmission frequency of the walkie talkie is digital.

At present, the production of walkie talkie is still based on analog walkie talkie. Analog intercom is a communication mode that modulates voice, signaling and signal to the carrier frequency of walkie talkie in continuous wave mode, and then amplifies and optimizes the processing. It has the advantages of mature technology, perfect system and relatively low cost. Domestic walkie talkie products are only active in the low-end market, and domestic competition in low-cost, and the phenomenon of cloning is serious, which doomed the walkie talkie industry to face a major crisis. Therefore, industry insiders believe that the digital development of analog walkie talkie is a test of enterprise technology and strength. This process is also a good opportunity for enterprises to reshuffle their cards and take the opportunity to eliminate some weak enterprises.

Mobile Phone Intercom (public network intercom), also known as POC, is a half duplex voice service based on mobile cellular packet domain and implemented by VoIP technology. It can support one-to-one conversation, group conversation, broadcast, etc. Its characteristic is that with the help of IP technology, PoC service can be "always online", and the mobile communication network covers a large area. But the ordinary interphone must receive the limit in the transmission distance. In recent years, the application of mobile phone intercom is more and more, and Telecom is also focusing on promotion. In view of the fact that the one to many group call function is the same as the traditional intercom function, and the communication range will not be controlled, it is believed that mobile phone intercom will replace the traditional intercom.

Now people's voice for digital intercom is rising day by day, and digital intercom will have a huge market demand. However, no matter how widely used digital walkie talkie is, it will continue to serve the design of walkie talkie for a long time to meet the different needs of communication users with small size, low cost, strong function and more commercialization. Digital walkie talkie can not replace analog walkie talkie in a short period of time, and mobile phone intercom will not replace analog intercom. Still, no one will replace whom. Development is the absolute principle, and innovation is the best way of thinking. They will play their respective characteristics and develop together